Home / 31,340.14-47,012.04-12,620.03

Finding the Fourth Proportional to 31,340.14, 47,012.04 and 12,620.03

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Solution

The fourth proportional to 31,340.14, 47,012.04 and 12,620.03 is: 18,930.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,340.14 : 47,012.04 = 12,620.03 : x
  2. Step 2: Convert to fraction form
    31,340.14/47,012.04 = 12,620.03/x
  3. Step 3: Cross multiply
    31,340.14x = 47,012.04 × 12,620.03
  4. Step 4: Simplify right side
    31,340.14x = 593,293,120.10
  5. Step 5: Solve for x
    x = 593,293,120.10/31,340.14
  6. Step 6: Final answer
    x = 18,930.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.